Test regular expressions with live highlighting
Regular expressions are powerful but notoriously tricky to debug. Our free regex tester highlights matches in real time as you type, shows captured groups, and flags errors in your pattern — giving you instant visual feedback so you can iterate faster and ship correct regex the first time.
Type your regex and test string — see matches highlighted live, free and instant.
Count words, characters, sentences & reading time
Convert text between upper, lower, title, camel case & more
Test your typing speed with WPM & accuracy tracking
Generate placeholder text for designs & layouts
Remove extra spaces, blank lines & special characters
Sort, reverse, shuffle & deduplicate lines
Convert text to URL-friendly slug format
Compress images with adjustable quality
Convert between PNG, JPEG, WebP, AVIF & PDF
Resize images with aspect ratio lock
Encode images to Base64 data URI
Generate multi-size favicons from any image
WordPress-optimized favicon generator
WordPress-optimized image compression
Minify & clean SVG code
Convert SVG to PNG with custom scaling
Convert between TTF, OTF, WOFF, WOFF2 & EOT
Convert between CSV and JSON formats
Convert between JSON and YAML formats
Encode & decode Base64 strings
Encode & decode HTML entities
Encode & decode URL components
Convert between binary, octal, decimal & hex
Visual CSS Grid builder with live preview
Interactive Flexbox property explorer
Convert CSS properties to Tailwind classes
Generate harmonious typography scales
Build CSS keyframe animations visually
Create & preview cubic-bezier easing curves
Preview CSS transform combinations
Style custom scrollbars with live preview
Color picker, contrast checker & palette generator
Generate accessible focus-visible ring styles
Minify HTML, CSS & JavaScript code
Format, validate & beautify JSON data
Format & beautify SQL queries
Decode & inspect JWT tokens
Test regular expressions with live highlighting
Build & explain cron expressions visually
Quick Elementor widget CSS snippet generator
Generate v4 UUIDs in bulk
Generate strong random passwords
Generate SHA-256 & SHA-512 hashes
Detect what any website is built with
Scan a site's sitemap & pages for broken links
48 Tools — Built for developers, by developers